The problem is, i did exactly like http://orange.biolab.si/doc/tutorial/load-data/ in my excel , when i look at the data table in the orange canvas,the data table show that the second(discrete) and third(?) row are included as the value , and now i have 26 rows... i think the second and third row doesnt supposed to show up but instead just giving the attributes either discrete or continous, so i really would like a solution for it

I already figured it out. when you choose save as tab delimited format using excel, it usually save it in text format. so i download lense example from orange website and copy the whole data into the lense file(since the file is in the real tab delimited format). my problem seem to be solved